It's very easy to use because of its simple interface & clear instructions are provided by Adobe itself (which I love). The program has many options that can be used in order make it more user-friendly like adding comments or bookmarks etc., which helps me save time while working with my clients' files as well! Nothing much at this point but there could have been some improvements such as an option where you may want your document saved without any changes made from previous versions so users don't need keep downloading them again when they open up their file next week/month(s) later? Maybe if we're allowed multiple copies then maybe one copy would do just fine until all revisions were done since each revision requires another version hence making our storage space smaller than expected.